JP4616634B2 - Decorative metal plate - Google Patents

Description

  The present invention relates to a decorative film having a realistic metallic appearance, and a decorative board formed by laminating the decorative film on a substrate.

  Laminate printed layers and transparent resin film layers as interior materials such as doors and cabinets for household appliances such as refrigerators and audio equipment, building walls, ceilings, door members, etc. A decorative board formed by laminating a decorative film provided with an uneven pattern on a substrate is often used. For example, a transparent resin layer having a surface embossed on one surface of a colored resin layer is laminated, and the heated colored resin layer is prevented from adhering to an embossing roll or the like when embossed on the other surface. A decorative film formed by laminating a resin layer for adhesion prevention has been proposed (see, for example, Patent Document 1).

  Furthermore, as a member of the above-mentioned home appliances and building interior materials, a metal plate such as an aluminum plate or a stainless steel plate that has excellent corrosion resistance and does not generate rust even when exposed to the atmosphere for a long time may be used. However, these metal plates are more expensive than steel sheets such as cold-rolled steel sheets, so that decorative sheets made by laminating a decorative film having a metallic appearance on the cold-rolled steel sheets are replaced with aluminum sheets and stainless steel sheets. It is used.

  A resin film having such a metallic tone is laminated on a substrate, and a light diffusion / transmission resin layer having a certain range of visible light transmittance and haze value on a metal layer made of a metal foil or a metal vapor-deposited layer. A decorative material is proposed in which a pattern layer and a transparent resin layer are provided, and a backing layer is selectively provided on the back side of these metal layers (see, for example, Patent Document 2). Further, a metallic decorative sheet having a number of grooves by hairline or spin processing on the back surface of the transparent synthetic resin film, and further laminating a primer layer, a metal thin film layer or a bright pigment containing colored layer, and a decorative layer, and A metallic decorative board in which this is pasted on a substrate via an adhesive layer has been proposed (see, for example, Patent Document 3).

  However, in the decorative material according to Patent Document 2, in order to avoid the “glaring” view when using a mirror glossy metal foil or a metal vapor-deposited layer, it is translucent on the metal layer made of the metal foil or metal vapor-deposited layer. The light diffusive and transparent resin layer is provided. That is, the cosmetic material according to Patent Document 2 aims to avoid the “glare” view by providing a translucent light diffusing transparent resin layer on the metal layer without adjusting the gloss by hairline processing or the like. .

  Further, in the metallic decorative sheet according to Patent Document 3, a hairline pattern or a spin pattern is provided on the back surface of the transparent synthetic resin film, and a metal thin film is provided on this surface by vapor deposition, or a colored layer containing a bright pigment is laminated. By a method suitable for production, a metallic appearance is obtained with the intended color and gloss.

  However, depending on the application, there may be a demand for an appearance that is exactly the same as that obtained with a metal plate, or an appearance that can be imparted only on the surface of a metal plate that further utilizes the characteristics of a metal plate, A semi-transparent resin film is laminated on a metal layer such as a metal foil, a hairline pattern is provided on the resin film, a metal thin film is provided on the surface provided with the hairline pattern, or a bright pigment is contained. Only by providing a colored layer, it cannot be applied to applications requiring a clear metallic appearance as described above. In addition, when water or air enters the interface between the metal vapor deposition layer and the resin film from the cut end face of the film or sheet during long-term use, particularly in a hot and humid environment, the thin metal vapor deposition layer corrodes and the generated corrosion. The appearance is damaged when the metal deposition layer is contaminated by an object or the metal layer is consumed due to corrosion and the color tone changes.

Prior art documents relating to the present invention include the following.
JP 2004-074657 A JP 2003-291254 A JP 2001-001444 A

  The present invention provides a decorative film having a clear metallic appearance equivalent to that of a metal plate, the color tone of the surface of the metal layer being not changed by corrosion, and an inexpensive decorative plate formed by laminating the decorative film on a substrate. For the purpose.

To solve the above problems decorative film of the present invention, Ri Na by laminating a metal foil having an uneven pattern on a transparent resin film and the surface, as the lower of the metal foil, 9 × 10 -5 ^{/ K} or less in linear expansion a rate decorative film backing layer made of a resin film having a (thermal expansion coefficient) that are formed (claim 1),
In the decorative film of (Claim 1), the concavo-convex pattern is either a hairline pattern or a sand finish pattern (Claim 2), and in the decorative film of (Claim 1 or 2), A hard coat layer is provided on an upper layer of the transparent resin film (Claim 3), and in the decorative film of the above (Claims 1 to 3), the transparent resin film and the metal foil are bonded to an adhesive. (Claim 4), and in the decorative film according to (Claims 1 to 4), a printed layer is provided on the surface of the transparent resin film to be laminated with the metal foil. (Claim 5), and in the decorative film according to (Claims 1 to 5), the transparent resin film is a polyethylene terephthalate film (Claim). Section 6), wherein, also in cosmetic film of the above (claims 1 to 6), wherein the metal foil is characterized is any one of an aluminum foil or stainless steel foil (claim 7), it was or
In cosmetic film on Symbol (claim 1-7), the metal foil and that formed by laminating via an adhesive between the backing layer and wherein (claim 8), it was Saranima
In cosmetic film on Symbol (claims 1-8), said resin film is a polyester resin film (claim 9),
In the decorative film of the above (claims 1 to 8), the resin film is a composite film in which a lower layer is an unstretched polyester resin film and an upper layer is a stretched polyester resin film .

The decorative board of the present invention is the decorative film (claim 1-10), formed by laminating a substrate with an adhesive veneer (claim 1 1).

  In the present invention, by laminating a metal foil such as aluminum or stainless steel, which has been subjected to processing such as hair alignment processing or sand finishing, and having a concavo-convex pattern on the surface, and a transparent resin film, the same appearance as the surface of the metal plate A decorative film having is obtained. Therefore, a decorative board made by laminating this decorative film on an inexpensive substrate such as a cold-rolled steel sheet has the same appearance as an aluminum plate or a stainless steel plate. Conventionally, an aluminum plate or a stainless steel plate is used. Moreover, it can be applied as an inexpensive material. Also, since metal foil is used to obtain a metallic appearance, when used for a long time in a hot and humid environment, compared to a decorative film or a decorative sheet using a metal vapor-deposited layer to obtain a metallic appearance. Moisture or air enters the interface between the metal vapor deposition layer and the resin film from the cut end surface of the sheet or sheet, and the thin metal vapor deposition layer corrodes, or the metal vapor deposition layer is contaminated by the generated corrosives or the metal layer is consumed due to corrosion. Thus, the appearance is not impaired by the change in color tone. Moreover, it can prevent that the unevenness | corrugation of a board | substrate surface appears on the metal foil surface of a decorative film by providing a backing layer in the back surface of metal foil. Furthermore, when a resin film having a small linear expansion coefficient (thermal expansion coefficient) close to the linear expansion coefficient (thermal expansion coefficient) of the metal foil is used as the backing layer, wrinkles occur when the backing layer is laminated on the metal foil. Hateful.

  Hereinafter, the present invention will be described in detail. As shown in FIG. 1, the decorative film 10 of this invention is obtained by laminating | stacking the transparent resin film 1 and the metal foil 2 with which the uneven | corrugated pattern 2a was provided on the surface. Further, as shown in FIG. 2, the hard coat layer 3 may be provided on the surface of the transparent resin film 1, or the backing layer 4 may be provided on the back surface of the metal foil 2 as shown in FIG. 3. Good. Further, as shown in FIG. 4, the transparent resin film 1 and the metal foil 2 may be laminated via an adhesive 5a. As shown in FIG. 5, the metal foil 2 and the backing layer 4 are also adhesives. It may be laminated via 5b.

  As the transparent resin film 1, a film made of any resin can be applied as long as the metal foil 2 laminated on the lower layer can be clearly seen. General-purpose materials such as polyester resin, polyolefin resin, polyamide resin, polycarbonate resin, acrylic resin, etc. However, it is preferable to use a biaxially stretched film of polyethylene terephthalate which is excellent in transparency and smoothness, has a hard surface and excellent scratch resistance, and is inexpensive.

  The metal foil 2 is preferably a foil made of a metal or alloy that is easy to form into a foil and has excellent corrosion resistance, and it is more preferable to apply aluminum, aluminum alloy, stainless steel or the like because it is relatively inexpensive. . Depending on the application, a foil made of a metal or alloy having a metal color other than silver-white, such as copper or copper alloy, is also applicable. These metal foils can be applied only on the surface of the metal plate that has the same appearance as that obtained by the metal plate by hairline processing or sand finishing using a rough surface roll, or on the surface of the metal plate further utilizing the characteristics of the metal plate. The metal foil must have a thickness of at least 5 μm so that the surface can be provided with irregularities using the above-mentioned processing methods such as hairline processing and sand finishing processing so as to have an appearance by processing. It is. When the thickness is 50 μm or more, the processability as a decorative film is deteriorated, which is not economically advantageous. Moreover, if it has thickness of 5 micrometers or more, when it laminates | stacks with the transparent resin film 1 and it is set as the decorative film 10, a water | moisture content and air | atmosphere will be the interface of the metal foil 2 and the transparent resin film 1 from the cut end surface of a decorative film. Since the amount of the metal layer consumed by corrosion due to intrusion is negligible, the color tone does not change and therefore the appearance is not impaired.

  The decorative film 10 is obtained by laminating the transparent resin film 1 and the metal foil 2 having irregularities on the surface using the processing method such as the hairline processing and sand finishing processing as described above. In order to prevent the surface of 1 from being wrinkled by scratches or the like, a hard coat layer 3 may be provided as shown in FIG. As the hard coat layer 3, a hard resin such as an epoxy resin, a melamine resin, an epoxy-melamine resin, an acrylic resin, an acrylic-silicon resin, an aminoalkyd resin, or a polyester resin is dissolved in a solvent and transparent It forms by apply | coating and drying on the surface of the resin film 1 so that it may become a thickness of 0.5-5 micrometers by dry thickness. In these hard coat layers, antibacterial agents, antistatic agents, light stabilizers, UV absorbers, and fine hard particles such as silica may be added to impart wear resistance, as long as the transparency is not deteriorated. Good.

Further, when sticking the decorative film 10 on the substrate, to prevent unevenness of the surface of the substrate appears in the metal foil 2 of the surface of the decorative film 10, the back surface of the metal foil 2 as shown in FIG. 3 5 A backing layer 4 having a thickness of about ˜300 μm may be provided. If the thickness of the backing layer 4 is less than 5 μm, the unevenness on the surface of the substrate cannot be sufficiently absorbed. When the thickness exceeds 300 μm, the effect of absorbing irregularities is saturated, which is not economically advantageous. As the backing layer 4, thermoplastics such as epoxy resin, polyurethane resin, polyester resin, polyolefin resin, polyamide resin, polycarbonate resin, acrylic resin, polyvinyl alcohol resin, ethylene-vinyl acetate copolymer resin, ethylene-vinyl alcohol copolymer resin, etc. Resin can be used, but when it is laminated on the decorative film 10, wrinkles may occur if the difference from the linear expansion coefficient (thermal expansion coefficient) with the metal foil is large. it is preferable to use a small difference resins and rate (thermal expansion coefficient), the linear expansion coefficient of aluminum alloy and stainless steel are respectively 2.35 × ^{10 -5} /K,1.64×10 -5 / K since, the use of resin having 9 × 10 -5 ^{/ K} or less in linear thermal expansion coefficient as the backing layer 4 (thermal expansion coefficient) Masui. In particular, the linear expansion coefficient of polyethylene terephthalate, polybutylene terephthalate, ethylene terephthalate / ethylene isophthalate copolymer, butylene terephthalate / butylene isophthalate copolymer, and polyester resin unstretched film obtained by blending two or more of these is Since it is about 5-7 * 10 < ^-5 > / K and the linear expansion coefficient of a stretched film is about 1-2 * 10 < ^-5 > / K, the unstretched film and stretch which consist of one type of these polyester resins Especially a film or an unstretched film composed of two or more layers of these polyester resins, a stretched film, or a multilayer film in which the lowermost layer is an unstretched film suitable for thermal bonding and the upper layer is a stretched film. The backing layer 4 can be suitably used. These backing layers 4 may be applied to the back surface of the metal foil 2 or may be applied as a film. The linear expansion coefficient of the resin can be measured in accordance with JIS K 7197 at a measurement temperature of 20 to 40 ° C.

  The backing layer 4 may be provided on the back surface of the metal foil 2 in the decorative film 10 as shown in FIG. 3 and FIG. A decorative layer may be provided, and the decorative film 10 shown in any of FIG. 1, FIG. 2, and FIG.

  The transparent resin film 1 and the metal foil 2 and the metal foil 2 and the backing layer 4 may be laminated by direct thermal bonding using a thermal bonding method, respectively. When the adhesive method cannot be used, as shown in FIGS. 4 and 5, the transparent resin film 1 and the metal foil 2, and the metal foil 2 and the backing layer 4 are attached via the adhesives 5 a and 5 b, respectively. You may laminate. The adhesives 5a and 5b are appropriately selected from the following adhesives according to the respective materials. As the adhesive made of thermoplastic resin, an adhesive made of polyvinyl acetate resin, polyvinyl chloride resin, polyvinyl alcohol resin, ethylene-vinyl acetate copolymer resin, polyvinyl acetal resin, polyester resin, or the like can be used. As an adhesive made of a thermosetting resin, an adhesive made of an epoxy resin, a phenol resin, a melamine resin, a urea resin, an unsaturated polyester resin, a polyurethane resin, a polyester polyurethane resin, or the like can be used. As the rubber adhesive, an adhesive made of natural rubber, chloroprene rubber, butyl rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, or the like can be used. In addition, on the surface of the transparent resin film 1 to be laminated with the metal foil 2, a printing layer such as a pattern printing layer or a solid printing layer is provided so that the entire surface of the metal foil 2 is not concealed in order to improve design properties. Also good.

  The decorative board of the present invention is obtained by pasting and laminating the decorative film of the present invention prepared as described above on a substrate. FIG. 6 shows one embodiment of the decorative board of the present invention. In this embodiment, the decorative board 20 is configured by laminating the decorative film 10 shown in FIG. 5 on the substrate 6 via the adhesive 5c. The substrate 6 is a cold-rolled steel sheet, a plated steel sheet obtained by plating the cold-rolled steel sheet with zinc, zinc alloy, aluminum alloy, etc., and the cold-rolled steel sheet is subjected to chemical conversion treatment such as electrolytic chromic acid treatment, phosphoric acid chromate treatment, and various non-chromium treatments. It is preferable to use a surface-treated steel sheet that has been subjected to the above treatment, or a surface-treated steel sheet that has been subjected to these chemical conversion treatments. Depending on the application, a wooden board such as a wooden board or a plywood board, a non-metallic board such as a plaster board or a plastic board may be used. When the substrate 6 is a metal plate, it may be laminated by direct thermal bonding using a thermal bonding method. However, when the adhesiveness during processing is particularly necessary, or when the substrate 6 is a non-metallic plate and the thermal bonding method is used. When it cannot adhere, you may stick and laminate | stack through the adhesive agent 5c. As the adhesive 5c, an adhesive made of the above thermoplastic resin, an adhesive made of a thermosetting resin, or a rubber-based adhesive is appropriately selected and used in accordance with each material.

  Hereinafter, the present invention will be described in detail with reference to examples.

(Example)
[Creating a decorative film]
The polyethylene terephthalate biaxially stretched film shown in Table 1 is used as the transparent resin film, and the aluminum foil or stainless steel foil subjected to the surface treatment shown in Table 1 is used as the metal foil. A decorative film shown in Table 1 was prepared using the adhesive shown in Table 1 by the method. Further, when the backing layer is selectively provided, in the case of samples Nos. 3 and 4, the lower layer is an unstretched film of an ethylene terephthalate / ethylene isophthalate copolymer, and the upper layer is a biaxially stretched film of polyethylene terephthalate. The polyester film of the layer was laminated | stacked on the back surface of the metal foil of a decorative film using the adhesive agent shown in Table 1. In the case of sample number 5, an unstretched film of polyethylene terephthalate was laminated on the back surface of the metal foil of the decorative film using the adhesive shown in Table 1. In the case of sample number 6, an unstretched film of an ethylene terephthalate / ethylene isophthalate copolymer was laminated on the back surface of the metal foil of the decorative film using the adhesive shown in Table 1. In the case of sample number 7, a biaxially stretched film of polyethylene terephthalate was laminated on the back surface of the metal foil of the decorative film using the adhesive shown in Table 1. In the case of sample number 8, an unstretched polypropylene film was laminated on the back surface of the metal foil of the decorative film using the adhesive shown in Table 1. In the case of sample number 9, an unstretched polyvinyl chloride film was laminated on the back surface of the metal foil of the decorative film using the adhesive shown in Table 1. In the case of the sample of sample number 10, an epoxy resin containing 30% by weight of dioctyl phthalate as a plasticizer is applied to the electrogalvanized steel sheet used as the decorative board substrate shown below to a thickness of 50 μm and dried. Layered. The linear expansion coefficients of these backing layers were measured according to JIS K 7197 at a measurement temperature of 20 to 40 ° C. When the hard coat layer was selectively provided, the epoxy-melamine resin was applied to the transparent resin film surface of the decorative film so that the coating thickness after drying was 1.5 μm and dried. When the printing layer was selectively provided, a transparent resin film in which a honeycomb pattern was printed with black ink on the side of the transparent resin film laminated with the metal foil was used. In this way, 10 types of decorative films (sample numbers: 1 to 10) were prepared.

[Creating a decorative board]
As a substrate on which the decorative film is laminated, an electrogalvanized steel sheet (plate thickness: 0.4 mm, plating amount: 20 g / m ² , electrolytic chromic acid treatment was applied after plating, and 40 mg / m ² was attached as chromium), In the case of the samples of sample numbers 1 to 9, nine types of decorative films other than the sample number 10 were laminated on the substrate using the adhesive shown in Table 1. In the case of the sample of sample number 10, the decorative film of the above sample number was laminated on the substrate in which the epoxy resin backing layer was provided on the electrogalvanized steel sheet as described above using the adhesive shown in Table 1. In this way, test decorative boards (sample numbers: 1 to 10) were prepared.

[Make comparative cosmetic film]
Using a polyethylene terephthalate biaxially stretched film shown in Table 1 as a transparent resin film, one side of the film is subjected to hairline processing with an average depth of 1.8 μm and an average width of 1.5 to 2.5 μm, and a primer made of a polyester resin is used. After coating and drying to a dry thickness of 0.8 μm, aluminum was vapor-deposited to a thickness of 0.07 μm to form a vapor-deposited film. This vapor-deposited film was provided with a two-layer polyester film backing layer and an epoxy-melamine-based resin hard coat layer in the same manner as the sample No. 4 decorative film described above to obtain a comparative decorative film (Sample No. 11).

[Make comparative decorative veneer]
As the substrate on which the decorative decorative film is laminated, the same electrogalvanized steel sheet as that used for the decorative board of sample number 10 above is compared using the same preparation method as that of the decorative board of sample number 10 A decorative film for the test was laminated to prepare a test decorative board (sample number: 11).

[Characteristic evaluation]
As described above, the characteristics of the decorative plates of the sample numbers 1 to 11 were evaluated as follows.

<Appearance>
By visual observation, the decorative film surface of the decorative board is compared with the surface of the aluminum foil or stainless steel foil equivalent to that used for the decorative film, and it has a clear metal-specific appearance equivalent to that of the aluminum foil or stainless steel foil. A case where the appearance was good (◯) and the appearance was inferior to the aluminum foil or the stainless steel foil was evaluated as poor (×).

<Wrinkle occurrence>
Observe the occurrence of wrinkles on the decorative film surface of the decorative board by visual observation. Practical use is possible when no wrinkles are observed (○), practical when minor wrinkles that do not cause design problems are possible. (△) and the case where wrinkle generation | occurrence | production which becomes a design problem was recognized were evaluated as unpractical (x).

<Processing adhesion>
After a cut is made on the decorative film surface of the decorative plate with a cutter knife at a depth that reaches the substrate surface at intervals of 7 mm, the decorative film surface is 8 mm deep so that the decorative film surface is on the convex side. After the Erichsen overhanging process, a scotch tape was applied to the cut portion and forcedly peeled off, and the peeled state of the transparent resin film and / or metal foil was visually observed and evaluated according to the following criteria.
A: No peeling is observed on the transparent resin film and / or the metal foil.
○: Only a slight amount of the transparent resin film and / or metal foil is peeled off around the cut so as not to cause a practical problem.
(Triangle | delta): Peeling of a transparent resin film or / and metal foil is recognized only around a cut.
X: Peeling of the transparent resin film and / or metal foil is observed over a range of several mm on both sides of the cut.

<Corrosion resistance>
After making an 80mm long X-shaped crosscut on the decorative film surface of the decorative plate with a depth that reaches the surface of the metal foil using a cutter knife, a salt spray test for 150 hours according to JIS Z 2371 After performing, the surface state was observed with the naked eye and evaluated according to the following criteria.
(Double-circle): Discoloration is not recognized by a metal part.
○: A very slight discoloration to the extent that does not cause a practical problem in the metal part is observed.
(Triangle | delta): Discoloration is recognized by a metal part.
X: The metal part around the cut is lost.
These characteristic evaluation results are shown in Table 2.

  As shown in Table 2, the decorative board of the present invention obtained by laminating the decorative film of the present invention on a substrate has a distinctive appearance unique to a metal plate, and no wrinkles are observed. When applied, the transparent resin layer and the metal foil do not peel off, and the transparent resin layer and the metal foil do not crack. In addition, it has excellent corrosion resistance, and even when exposed to a corrosive environment for a long time, it does not discolor due to the occurrence of rust on the metal foil or dissolves and loses like ultra-thin vapor deposited metal, maintaining a good appearance can do.

  The decorative film of the present invention is obtained by laminating a transparent resin film and a metal foil such as aluminum or stainless steel, which has been subjected to processing such as hair alignment or sand finishing to give an uneven pattern on the surface, Has the same appearance. Therefore, a decorative board obtained by laminating this decorative film on an inexpensive substrate such as a cold-rolled steel sheet has the same appearance as an aluminum plate or a stainless steel plate. Moreover, generation | occurrence | production of wrinkles is not recognized on the decorative film surface. In addition, when used for a long period of time in a hot and humid environment, compared to a decorative film or decorative sheet that uses a metal vapor-deposited layer to obtain a metallic appearance, moisture or air is released from the cut end surface of the film or sheet. The appearance deteriorates by invading the interface between the resin film and corroding the thin metal deposition layer, contaminating the metal deposition layer with the generated corrosive material, or consuming the metal layer due to corrosion and changing the color tone. There is nothing. Therefore, the decorative board of the present invention obtained by laminating the decorative film of the present invention on a substrate can be applied as an inexpensive decorative material for applications in which an aluminum plate or a stainless steel plate is conventionally used.

The schematic sectional drawing which shows an example of the decorative film of this invention. The schematic sectional drawing which shows another example of the decorative film of this invention. The schematic sectional drawing which shows another example of the decorative film of this invention. The schematic sectional drawing which shows another example of the decorative film of this invention. The schematic sectional drawing which shows another example of the decorative film of this invention. The schematic sectional drawing which shows an example of the decorative board of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Transparent resin film 2: Metal foil 2a: Concave-convex pattern 3: Hard coat layer 4: Backing layer 5a: Adhesive 5b: Adhesive 5c: Adhesive 6: Substrate 10: Cosmetic film 20: Cosmetic board

Claims (11)

Ri Na by laminating a metal foil with a transparent resin film and uneven pattern, as the lower of the metal foil, the backing layer made of a resin film having 9 × 10 -5 ^{/ K} or less in linear expansion coefficient (thermal expansion coefficient) cosmetic film but that has been formed.   The decorative film according to claim 1, wherein the uneven pattern is either a hairline pattern or a sand finish pattern.   The decorative film according to claim 1 or 2, wherein a hard coat layer is provided on an upper layer of the transparent resin film.   The decorative film according to any one of claims 1 to 3, wherein the transparent resin film and the metal foil are laminated via an adhesive.   The decorative film in any one of Claims 1-4 which provides a printing layer in the surface laminated | stacked with the said metal foil of the said transparent resin film.   The decorative film according to any one of claims 1 to 5, wherein the transparent resin film is a polyethylene terephthalate film.   The decorative film according to any one of claims 1 to 6, wherein the metal foil is an aluminum foil or a stainless steel foil. The decorative film according to any one of claims 1 to 7 , wherein the decorative film is formed by laminating an adhesive between the metal foil and the backing layer. The decorative film according to claim 1, wherein the resin film is a polyester resin film. The decorative film according to any one of claims 1 to 8, wherein the resin film is a composite film in which a lower layer is an unstretched polyester resin film and an upper layer is a stretched polyester resin film. The decorative board formed by laminating | stacking the decorative film in any one of Claims 1-10 on a board | substrate through an adhesive agent.

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